The Eagles made a series of moves today, trimming their roster down to 75 players.

Mike Patterson has been placed on the non-football illness list, meaning he’s out for the first six weeks of the season. After that, he can return to practice, and the Eagles have three weeks to either place him on injured reserve (ending his season) or add him to the 53-man roster.

The same rules apply to Jason Peters, who’s been placed on the non-football injury list.

Meanwhile, offensive lineman Mike Gibson has been placed on injured reserve with a minor injury (hip flexor). And the Eagles have waived wide receiver Jamel Hamler.

“I think that’s going to be an extended time here,” Reid said. “We’ve just got to see how that goes, if he’s able to go at all this year. We just have to see how that works out. We’ll take checkups in increments here, but right now, it’s going to be awhile.”

Patterson is recovering from offseason brain surgery.

The expectation for Peters, meanwhile, has been that he’ll miss the entire season after rupturing and then re-repturing his Achilles tendon in the offseason.

Combined, Peters and Patterson started 29 games last season. Peters made his fifth Pro Bowl, and Patterson played more snaps than any other Eagles defensive tackle.

The Eagles have until Friday night at 9 p.m. to get their roster down to 53 players.

Eagles head coach Andy Reid confirmed today that defensive tackle Mike Patterson could miss the entire season as he recovers from offseason brain surgery.

“I think that’s going to be an extended time here,” Reid said. “We’ve just got to see how that goes, if he’s able to go at all this year. We just have to see how that works out. We’ll take checkups in increments here, but right now, it’s going to be awhile.”

It seems clear that the Eagles are not counting on Patterson, but will wait and see how things play out.

Patterson suffered a seizure during training camp in 2011. He played the entire season before undergoing brain surgery in the offseason. On the first day of training camp this summer, Reid announced that Patterson would not participate. But the veteran defensive tackle still stayed at Lehigh, worked on conditioning and helping his teammates.

“He doesn’t have to come to these rookie meetings at night, in the afternoon,” defensive line coach Jim Washburn said last month. “He doesn’t have to be there. I said ‘Mike, you don’t have to be there.’ He said, ‘Well I like to be there.’ He likes football. He’s a good one, god dangit, we miss him now.”

Among Eagles defensive linemen, only Jason Babin played more snaps than Patterson last season, according to Pro Football Focus. Patterson seemed to adjust well to Washburn’s style, finishing tied for third on the team with 24 quarterback hurries.

The Eagles drafted Fletcher Cox in the first round of April’s draft. They also brought Derek Landri back and re-structured Cullen Jenkins’ contract in the offseason.

For now, Cox and Landri are the starting defensive tackles. Jenkins has been playing left defensive end with the first team while Babin recovers from a calf strain. Antonio Dixon and Cedric Thornton have been rotating in with the second group. All five defensive tackles (Cox, Jenkins, Landri, Dixon, Thornton) could make the roster. If the Eagles only keep four, Dixon will likely be the odd man out.

The Eagles selected Patterson with the 31st pick in the first round back in 2005. He’s started 99 games and appeared in 110 in seven NFL seasons.

OTHER INJURY UPDATES

*Babin has “a good chance of being back Week 1,” Reid said. The Eagles starting defensive end has been rehabbing a calf strain he suffered early in camp.

* Riley Cooper is making progress from surgery to repair a fractured collarbone, but it’s unlikely that he’s ready for Week 1. “We’ll see. That’ll be a struggle,” Reid said. “I wouldn’t expect him the first game. We’ll see what the doctors say on it.”

* Mike Kafka will be checked out by doctors and has a chance to return to practice Monday.

* Casey Matthews is recovering from a high ankle sprain and likely won’t play Week 1. “That’ll be a struggle to get him ready for the first game, but he stands a chance there,” Reid said.

* Michael Vick was able to throw a little bit today and could be on the field for Flight Night.

* Colt Anderson is making progress, but is not ready yet. “He’s getting there. I’m not sure he’s quite there yet, but he’s made a lot of progress,” Reid said. “I think it’s just a matter of a little bit of time here.”

BETHLEHEM — A couple things to clear up surrounding the Mike Patterson situation.

I have heard the latest news referred to as a “setback,” but that’s not entirely accurate. The healing in the brain is not the issue. Instead, it’s the bone graft on his cranium that still needs some time to heal. The estimated time for recovery is six months, but it can obviously take longer. According to his agent, J.R. Rickert, Patterson will still participate in conditioning exercises but won’t take part in any contact drills during training camp.

The news came down on Friday, as Dr. Robert Spetzler made it known that he wasn’t comfortable clearing Patterson. By the sounds of it, they are being very cautious. Rickert, who has been in communication with the doctors, said that the only risk of Patterson returning to action is if he lost his helmet on the playing field and sustained a direct hit on the area of the head where the bone graft took place.

“He would be cleared in any other sport,” said Rickert.

The smart move is to be conservative. This is a 28-year-old who has a lot of years ahead of him. Football is secondary.

As far as timing for his return, this sounds like a situation that could creep into the regular season. There is legitimate optimism coming from his camp that he will be back on the field at some point this year but the Eagles will have to move ahead for now as if he won’t be available early on. Fortunately for them, they have some depth along the defensive front.

“We’re just going to have to play it by ear, to tell you the truth,” said Patterson, “because we have to wait for the doctors to say [something]. Hopefully something happens sooner than later.”

Patterson added that the news “kinda threw me off because I thought I could be ready right now and be able to practice. [The doctor] looked at it and just felt more comfortable if I wait a little longer.”